Online Education For Gem Enthusiasts

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2,146 Articles
6,470 Members
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The world's best gem articles, published weekly.

Most Recent Articles

Gemstone Care Guide

Our gemstone care guide covers many popular gems. Learn how best to maintain your gemstone jewelry and what kinds of stresses and cleaning methods to avoid.

How to Use a Color Wheel for Gem Faceting

A color wheel and mixing chart can help novice gem cutters evaluate how well colors will mix in a finished piece. Learn how to utilize these common tools.

Turquoise Buying Guide

Revered for millennia, sky blue turquoise still has a dedicated following. Our turquoise buying guide can help you pick a gem for your next jewelry project.

Red Beryl Value, Price, and Jewelry Information

Originally known as bixbite, red beryl is one of the rarest, most desirable, and most expensive gemstones. Most fine crystal specimens are zealously guarded by mineral collectors and are never faceted.

Gem Rough Orientation: Looking Beyond the Obvious Cut

Gem rough orientation isn’t always simple. Sometimes the obvious cut may not be the best choice. Learn how orienting rough can affect gem yields and prices.

Are Diamonds Really Rare? Diamond Myths and Misconceptions

Diamonds are popular gemstones surrounded by popular misconceptions. We’ll tell you how they became so prized and debunk some of those diamond myths, too.

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"Becoming a Pro Member of IGS just made good sense for my business. The gemology resources are fantastic, and my profile lets potential customers know I am serious about colored gemstones. And frankly, if I get any exposure to potential customers it's a no-brainer."
Paul Bierker, Paul Michael Designs
Jeweler, IGS Pro Member

The world's best online resource for gemstone appraisal

Over 15 years, we have assembled detailed pricing and value information for appraising over 70 different gemstones. The values in our guide come from a variety of sources including primary and secondary gemstone dealers, jewelers, miners, and wholesale suppliers of commonly traded gemstones.

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